Noun
Graphic granite. See under Granite.
More generally, a coarse granite occurring as vein material in other rocks.
Source: Webster's dictionaryGeochemistry Elbaite tourmaline (olive-green) and lepidolite mica (violet), from a lithium -enriched pegmatite in Brazil Pegmatite is difficult to sample representatively due to the large size of the constituent mineral crystals. Source: Internet
Columbite–tantalite minerals are most usually found as accessory minerals in pegmatite intrusions, and in alkaline intrusive rocks. Source: Internet
If the pegmatite fluid is rich in beryllium, crystals of beryl or chrysoberyl could form. Source: Internet
Hence, pegmatite is often characterised by sampling the individual minerals which comprise the pegmatite, and comparisons are made according to mineral chemistry. Source: Internet
In some locations, very coarse-grained pegmatite masses occur with granite. Source: Internet
Nomenclature Pegmatites can be classified according to the elements or mineral of interest, for instance "lithian pegmatite" to describe a Li-bearing or Li-mineral bearing pegmatite, or "boron pegmatite" for those containing tourmaline. Source: Internet